Title :
A novel GPS avionics antenna
Author :
Chien H.Ho ; Shumaker, P.K. ; Lu Fan ; Smith, K.B. ; Jih W.Liao
Author_Institution :
Garmin Commun. & Navigation, USA
Abstract :
This paper presents a new printed cylindrical slot antenna for GPS avionics applications. This new antenna consists of four cylindrical slots which are fed by quarter-wavelength microstrip baluns. The proposed antenna provides compact size, low cost, ease of mass production, near-hemispherical radiation coverage and circular polarization properties. Experimental results show that the printed cylindrical slot antenna has a 3 dB beamwidth of 120/spl deg/ and a front-back ratio of more than 15 dB.
Keywords :
Global Positioning System; antenna feeds; antenna radiation patterns; electromagnetic wave polarisation; impedance matching; microstrip antennas; microstrip components; slot antennas; GPS avionics antenna; beamwidth; circular polarization; compact size antenna; cylindrical slots; experimental results; front-back ratio; impedance matching; low cost; mass production; near-hemispherical radiation coverage; printed cylindrical slot antenna; quarter-wavelength microstrip baluns; Aerospace electronics; Aircraft; Antenna measurements; Feeds; Global Positioning System; Impedance; Microstrip antennas; Polarization; Satellites; Slot antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1996. AP-S. Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-3216-4
DOI :
10.1109/APS.1996.549987
